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ale4655 [162]
4 years ago
5

v = 20.8x^2 - 458.3x + 3,500 represents the value of a car from 1964 to 2002. What year did the car have the least value? (x= 0

in 1964)

Mathematics
1 answer:
Karo-lina-s [1.5K]4 years ago
7 0
See the picture for all detail, I have done it by hand.
Few important steps;
-Take the first derivative
-Put it equal to zero
-you get the x value which is equal to 11
-Now for the check that x=11 is the least value or not, take the second derivative
-As, the 2nd derivative is positive so it is the least value

As x=0 in 1964 add 11 to it so at x=11 we get 1975 so in this year car have least value

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Define a variable and write an equation to model the situation,
lara31 [8.8K]

Answer:

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6 0
4 years ago
What is the surface area of this square pyramid?
Karo-lina-s [1.5K]

Answer:

A;3600 yd2

Step-by-step explanation:

The surface area is found by adding the area of the sides

The area of the bottom is

A= s^2 where s is the side length since it is a square

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We can find the area of one of the sides and multiply by 4 since all the sides are the same

The sides are triangles so

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6 0
3 years ago
If h(x) = x^2 - 3x + 5
Ludmilka [50]

Answer:

2.) 15 = h(5)

1.) 23 = h(-3)

Step-by-step explanation:

{5}^{2} - 3[5] + 5 = h(5) → 25 - 15 + 5 = h(5) → 15 = h(5) \\ \\ [-3]^{2} - 3[-3] + 5 = h(-3) → 9 + 9 + 5 = h(-3) → 23 = h(-3)

I am joyous to assist you.

5 0
4 years ago
Geometry area question. Please help!
timurjin [86]
You can calculate polygon area with only apothem OR side length.

apothem only
area = apothem^2 * 6 * tan (180/6)
area = 10.4^2 * 6 * 0.57735
area = 108.16 * <span> <span> <span> 3.4641 </span> </span> </span>
area = <span> <span> <span> 374.677056 </span> </span> </span> square yards

side length only
area = 6 * 12^2 * / 4*tan(30)
area = 864 / 4 * 0.57735
area = 864 / <span> <span> <span> 2.3094 </span> </span> </span>
area = <span> <span> <span> 374.1231488698 </span> </span> </span> square yards

If apothem and side length were given with more precision, the answers would be closer.

Source:
http://www.1728.org/polygon.htm


5 0
3 years ago
Can someone help me please??
expeople1 [14]
1. A) TR
2. D) SRN
3. A) 7.5 inches (15 ÷ 2)
4. C) NST
I hope this helps!
4 0
4 years ago
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